The Red Sox have made the Phillies aware of the parameters of what they’re willing to part with in order to acquire Hamels, a source tells Bradford. Per Cafardo’s weekend writing, the most recent offer consisted largely of Major League assets rather than the elite prospects that the Phillies are known to be seeking (specifically, Philadelphia is said to have its eye on top catching prospect Blake Swihart).

It’s unclear exactly what the Sox have expressed comfort in trading, though two completely speculative names with big league experience that could appeal to the rebuilding Phillies would be Jackie Bradley Jr. and Christian Vazquez. (Though I’d assume any package including those names would also contain further minor league talent.) The Sox have a notable outfield surplus, and Ryan Hanigan’s excellent glove could bridge the gap from Opening Day to Swihart’s Major League debut. It stands to reason that Boston hasn’t mentioned the name Mookie Betts or Xander Bogaerts in those talks, as either would figure to grab Amaro’s attention immediately.

Jason Mastrodonato of MassLive.com agrees that Betts’ name likely hasn’t been mentioned, as he feels the inclusion of Betts would likely persuade the Phils to accept a deal. In Mastrodonato’s eyes, the Red Sox have been wise to exercise patience in regards to Hamels, as he could be one of a number of possible front-line starters available this summer. Beyond Hamels, names like Johnny Cueto, Mat Latos, David Price, Jordan Zimmermann and Zack Greinke could be available this summer (the latter three pitch for likely contenders, though injuries routinely lead to unexpected deadline sellers), and the cost of acquiring a big-ticket rotation upgrade could decline by July.

As Mastrodonato points out, Hamels’ remaining $96MM commitment — which would very likely jump to $110MM, as Hamels could ask that his fifth-year vesting option be guaranteed as compensation for waiving his no-trade clause — is something Boston would have had to plan around adding, and there’s no indication that’s the case at this point. Indeed, general manager Ben Cherington again said today that he’s not expecting a roster addition before pitchers and catchers reports, tweets the Globe’s Peter Abraham.

One item worth noting on Hamels’ contract would be that guaranteeing his 2019 option, an acquiring team would actually lessen the luxury tax hit it would be taking on. Luxury tax is calculated by average annual value of a contract, and the deal’s AAV would actually drop, as guaranteeing the $20MM option is essentially adding one year and $14MM to the deal, as $6MM of that year’s value is already guaranteed in the form of a buyout.